#taxonomy:order=Teloschistales

[friendsrpbg]

2016-01-23-10.47.44 ZS PMax Xanthoria parietina by John Rusk Via Flickr: Xanthoria parietina—maritime sunburst lichen. One of the most widely distributed of lichens, Xanthoria parietina is found on every continent except Antarctica usually not far from maritime influences. Found most often on wood substrates, particularly trees of the genus Populus, it also grows on rocks, walls, and roofs. Xanthoria parietina covers the trunks of quaking aspens (Populus tremuloides) on the west stide of the Regional Parks Botanic Garden. This lichen is often used as a biomonitor for atmospheric nitrogen. It has also been found to have antiviral properties, inhibiting the replication of human parainfluenza virus type 2, according to Wikipedia. Photographed at Regional Parks Botanic Garden located in Tilden Regional Park near Berkeley, CA